Very cheap. Other telescopes also 40% off.
The Celestron NexStar 6SE is great for deep space viewing and astrophotography, and for beginners and experts alike.
150mm (6") Schmidt-Cassegrain telescope
1500mm focal length
Computerised alt-azimuth mount
f/10 focal ratio
25mm (60x) eyepiece
2 year warranty
Celestron Item # 11068
You can stack it with the eBay 10% cashback deal + 7% off (eBay PRESS coupon) + ShopBack Ozbargain exclusive ($2 off). I'm a new ShopBack member so also got the $11 sign up bonus. Brought the overall price down to $890, free shipping (pending all the cashbacks of course).
Thanks https://www.ozbargain.com.au/user/143709
That percent for the 8" is correct. The amount of light is relative to the area of the lens. The formula for the area is Pi x Radius squared. The area of a 6" is about 28 and the area of the 8" is about 50. The 8" is a lot more area.